剑指 Offer 58 - II. 左旋转字符串

leetcode链接：
https://leetcode.cn/problems/zuo-xuan-zhuan-zi-fu-chuan-lcof/

方案一

class Solution {
    public String reverseLeftWords(String s, int n) {
        StringBuilder result = new StringBuilder();

        for (int i = n; i < s.length(); i++) {
                result.append(s.charAt(i));
        }

        for (int i = 0; i < n; i++) {
            result.append(s.charAt(i));
        }

        return result.toString();
    }
}

结果

解答成功:
执行耗时:4 ms,击败了32.79% 的Java用户
内存消耗:42.2 MB,击败了26.70% 的Java用户

分析

时间复杂度：
O( n )

空间复杂度：
O( n )

官方题解

https://leetcode.cn/problems/zuo-xuan-zhuan-zi-fu-chuan-lcof/solution/mian-shi-ti-58-ii-zuo-xuan-zhuan-zi-fu-chuan-qie-p/